package com.bdqn.t330.ch10.shiro;


import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import com.bdqn.t330.ch10.entity.Right;
import com.bdqn.t330.ch10.servcie.RoleService;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.annotation.Resource;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

@Configuration
public class ShiroConfig {

    @Resource
    RoleService roleService;

    @Bean
    public MyShiroRealm myShiroRealm() { //自定义 Realm
        MyShiroRealm shiroRealm = new MyShiroRealm();
        return shiroRealm;
    }

    @Bean
    public DefaultWebSecurityManager securityManager() { //安全管理器 SecurityManager
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //注入 Realm
        securityManager.setRealm(myShiroRealm());
        return securityManager;
    }

    //启动tomcat就会执行,因为要初始化securityManager,securityManager需要初始化自定义realm,也就是我们的MyShiroRealm
    //
    @Bean
    public ShiroFilterFactoryBean shiroFilterFactory(SecurityManager securityManager) {//Shiro 过滤器：权限验证
        ShiroFilterFactoryBean shiroFilterFactory = new ShiroFilterFactoryBean();
        //注入 SecurityManager
        shiroFilterFactory.setSecurityManager(securityManager);
        //权限验证：使用 Filter 控制资源(URL)的访问

        //设置资源访问的规则
        //权限验证：使用 Filter 控制资源(URL)的访问
        shiroFilterFactory.setLoginUrl("/dologin");//
        shiroFilterFactory.setSuccessUrl("/main");
        shiroFilterFactory.setUnauthorizedUrl("/403"); //没有权限跳转 403 页面
        Map<String, String> filterChainDefinitionMap = new LinkedHashMap<String, String>();//必须使用 LinkedHashMap(有序集合)
        //必须使用 LinkedHashMap(有序集合)
        //配置可以匿名访问的资源(URL)：静态资源
        filterChainDefinitionMap.put("/css/**", "anon");
        filterChainDefinitionMap.put("/fonts/**", "anon");
        filterChainDefinitionMap.put("/images/**", "anon");
        filterChainDefinitionMap.put("/js/**", "anon");
        filterChainDefinitionMap.put("/localcss/**", "anon");
        filterChainDefinitionMap.put("/localjs/**", "anon");

        filterChainDefinitionMap.put("/login", "anon");
        filterChainDefinitionMap.put("/logout", "anon");
        //filterChainDefinitionMap.put("/logout", "logout");//注销过滤器，自动注销

        //filterChainDefinitionMap.put("/user/getlist", "perms[用户列表]");
        //filterChainDefinitionMap.put("/user/toadd", "perms[用户添加]");
        //filterChainDefinitionMap.put("/user/edit", "perms[用户编辑]");
        //filterChainDefinitionMap.put("/user/del", "perms[用户删除]");

         // 动态授权
         List<Right> rights = roleService.findAllRights();
         for (Right right :rights){
             if(right.getRightUrl()!=null && !right.getRightUrl().trim().equals(""))
            {
                 filterChainDefinitionMap.put(right.getRightUrl(),"perms["+right.getRightCode()+"]");
                 }
            }


        //配置认证访问：其他资源(URL)必须认证通过才能访问
        filterChainDefinitionMap.put("/**", "authc"); //必须放在过滤器链的最后面
        shiroFilterFactory.setFilterChainDefinitionMap(filterChainDefinitionMap);
        return shiroFilterFactory;
    }

    @Bean(name = "shiroDialect")
    public ShiroDialect shiroDialect() {//thymeleaf 页面上使用 shiro 标签
        return new ShiroDialect();
    }

    /**
     * 开启 Shiro 注解(如@RequiresRoles,@RequiresPermissions),
     * 需借助 SpringAOP 扫描使用 Shiro 注解的类,并在必要时进行安全逻辑验证
     * 配置以下两个 bean(DefaultAdvisorAutoProxyCreator 和AuthorizationAttributeSourceAdvisor)
     */
    @Bean
    public DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        advisorAutoProxyCreator.setProxyTargetClass(true);
        return advisorAutoProxyCreator;
    }

    /**
     * 开启 aop 注解支持
     */
    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(SecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
        authorizationAttributeSourceAdvisor.setSecurityManager(securityManager);
        return authorizationAttributeSourceAdvisor;
    }
}
